Update SHA512 tests

Tests/CryptoSwiftTests/HashTests.swift

@@ -5,6 +5,8 @@
 //  Created by Marcin Krzyzanowski on 06/07/14.
 //  Copyright (c) 2014 Marcin Krzyzanowski. All rights reserved.
 //
+// http://www.di-mgt.com.au/sha_testvectors.html (http://csrc.nist.gov/groups/ST/toolkit/documents/Examples/SHA_All.pdf)
+//
 
 import XCTest
 import Foundation
@@ -81,13 +83,12 @@ final class HashTests: XCTestCase {
     }
 
     func testSHA512() {
-        let data:Data = Data(bytes: UnsafePointer<UInt8>([49, 50, 51] as Array<UInt8>), count: 3)
-        if let hash = data.sha512() {
-            XCTAssertEqual(hash.toHexString(), "3c9909afec25354d551dae21590bb26e38d53f2173b8d3dc3eee4c047e7ab1c1eb8b85103e3be7ba613b31bb5c9c36214dc9f14a42fd7a2fdb84856bca5c44c2", "SHA512 calculation failed");
-        }
-        
-        XCTAssertEqual("The quick brown fox jumps over the lazy dog.".sha512(), "91ea1245f20d46ae9a037a989f54f1f790f0a47607eeb8a14d12890cea77a1bbc6c7ed9cf205e67b7f2b8fd4c7dfd3a7a8617e45f3c463d481c7e586c39ac1ed", "SHA512 calculation failed");
-        XCTAssertEqual("".sha512(), "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e", "SHA512 calculation failed")
+        XCTAssertEqual("abc".sha512(), "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f", "length 24 bits");
+        XCTAssertEqual("".sha512(), "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e", "the bit string of length 0");
+        XCTAssertEqual("abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq".sha512(), "204a8fc6dda82f0a0ced7beb8e08a41657c16ef468b228a8279be331a703c33596fd15c13b1b07f9aa1d3bea57789ca031ad85c7a71dd70354ec631238ca3445", "length 448 bits");
+        XCTAssertEqual("abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu".sha512(), "8e959b75dae313da8cf4f72814fc143f8f7779c6eb9f7fa17299aeadb6889018501d289e4900f7e4331b99dec4b5433ac7d329eeb6dd26545e96e55b874be909", "length 896 bits");
+
+        XCTAssertEqual(Array<UInt8>(repeating: 0x61, count: 1000000).sha512(), Array<UInt8>(hex: "e718483d0ce769644e2e42c7bc15b4638e1f98b13b2044285632a803afa973ebde0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b"), "One million (1,000,000) repetitions of the character 'a' (0x61)")
     }
     
     func testCRC32() {